[Iaude] MPEC X136: 2020 XB4 [a=1.09,e=0.53,i=20.4,H=23.8]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 12 09:22:09 EST 2020


M.P.E.C. 2020-X136                            Issued 2020 December 12, 14:20 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2020 XB4                                    


Observations:
     K20X04B* C2020 12 09.43398 06 34 14.62 +28 50 03.2          21.9 GVEX136V00
     K20X04B  C2020 12 09.43938 06 34 13.60 +28 50 25.0          21.7 GVEX136V00
     K20X04B  C2020 12 09.44478 06 34 12.61 +28 50 46.8          22.2 GVEX136V00
     K20X04B  C2020 12 09.45019 06 34 11.59 +28 51 09.0          22.3 GVEX136V00
     K20X04B  C2020 12 09.51187 06 34 00.14 +28 55 19.8          21.5 GVEX136V00
     K20X04B  C2020 12 09.51274 06 33 59.99 +28 55 22.6          21.6 GVEX136V00
     K20X04B  C2020 12 09.51362 06 33 59.81 +28 55 26.6          22.2 GVEX136V00
     K20X04B KC2020 12 10.25694506 31 45.21 +29 47 51.5                uEX136H21
     K20X04B KC2020 12 10.26303106 31 43.97 +29 48 18.0          22.0 VuEX136H21
     K20X04B KC2020 12 10.26911406 31 42.71 +29 48 44.5          21.9 VuEX136H21
     K20X04B KC2020 12 10.27316706 31 41.90 +29 49 01.7          22.2 VuEX136H21
     K20X04B KC2020 12 12.36043206 24 08.38 +32 30 59.8          22.32GVEX136V06
     K20X04B KC2020 12 12.36310006 24 07.68 +32 31 13.3          21.43GVEX136V06
     K20X04B KC2020 12 12.36577406 24 07.01 +32 31 26.7          21.41GVEX136V06
     K20X04B KC2020 12 12.36844806 24 06.33 +32 31 39.5          21.71GVEX136V06

Observer details:
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  1.3-m f/4.0
    astrograph + CCD.
V00 Kitt Peak-Bok.  Observer H. Groeller.  Measurers E. J. Christensen, G. A.
    Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
    Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.  2.25-m reflector + CCD.
V06 Catalina Sky Survey-Kuiper.  Observer D. C. Fuls.  Measurers E. J.
    Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.55-m reflector +
    1K CCD.

Orbital elements:
2020 XB4                                                 Earth MOID = 0.1294 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 292.12131              (2000.0)            P               Q
n   0.86040244     Peri.  136.81335     -0.77438896     +0.53301509
a   1.0948004      Node    78.47208     -0.63253877     -0.63966521
e   0.5330150      Incl.   20.36040     -0.01471212     -0.55382608
P   1.15           H   23.8           G   0.15           U   9
Residuals in seconds of arc
201209 V00  0.2-  0.1+    201209 V00  0.3+  0.3-    201210 H21  0.2+  0.3-
201209 V00  0.3-  0.1-    201209 V00  0.1+  0.1+    201212 V06  0.1-  0.1-
201209 V00  0.0   0.2-    201210 H21  0.0   0.1+    201212 V06  0.2-  0.1+
201209 V00  0.1-  0.0     201210 H21  0.1+  0.1+    201212 V06  0.1+  0.2+
201209 V00  0.2+  0.4+    201210 H21  0.1-  0.2+    201212 V06  0.3+  0.3-

Ephemeris:
2020 XB4                 a,e,i = 1.09, 0.53, 20                  q = 0.5113
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 12    06 53 39.6 +14 19 08   0.5856  1.4166   126.2    34.3    24.8
...
2020 11 27    06 53 21.2 +19 12 08   0.3987  1.3244   142.2    27.2    23.6
...
2020 12 05    06 44 25.8 +24 27 48   0.3096  1.2689   152.9    20.7    22.8
...
2020 12 11    06 29 16.1 +30 42 56   0.2502  1.2243   161.3    15.0    22.1
2020 12 12    06 25 34.9 +32 01 22   0.2411  1.2166   162.4    14.2    21.9
2020 12 13    06 21 26.7 +33 25 06   0.2323  1.2089   163.3    13.5    21.8
...
2020 12 19    05 42 40.7 +43 45 51   0.1868  1.1609   159.6    17.2    21.4
...
2020 12 27    03 27 29.7 +59 32 12   0.1533  1.0929   132.5    41.5    21.5
...
2021 01 11    21 58 21.9 +45 38 11   0.1910  0.9536    75.5    93.3    23.4

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X136




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